My first guess for the source of the problem is buying something with the word "tactical" in the name :laugh: Kidding

Seriously though, what exactly is the problem?
I am guessing (for reals this time) that the rail mount on the light is too big for use on the FsN and you are looking for a shim of some kind to fill the gap?

I can tell you that particular light was not made for the FsN but for S&W's Sigma Model E. S&W's rails look similar to those on my H&K .40 USP which would not accept a light/laser meant for the FsN, I tried. Therefore I expect the opposite would be true as well, a light/laser meant for the S&W would not work on a FsN.

Rapier1772 wrote:My first guess for the source of the problem is buying something with the word "tactical" in the name :laugh: Kidding

Seriously though, what exactly is the problem?
I am guessing (for reals this time) that the rail mount on the light is too big for use on the FsN and you are looking for a shim of some kind to fill the gap?

I can tell you that particular light was not made for the FsN but for S&W's Sigma Model E. S&W's rails look similar to those on my H&K .40 USP which would not accept a light/laser meant for the FsN, I tried. Therefore I expect the opposite would be true as well, a light/laser meant for the S&W would not work on a FsN.

I was thinking someone made a adapter that you could use, but I could not find one, and the M4 is a lot wider that the FN rail. I should trade it of put it on EBAY and buy a M3 and least I THINK the M3 will work? thanks john